(declare-fun a () Real)
(declare-fun b () Real)
(declare-fun c () Real)
(declare-fun d () Real)
(assert (not (exists ((e Real)) (=> (and (= 0 (/ a (- b e)) c)) (< c d)))))
(check-sat)
(declare-fun a () Real)
(declare-fun b () Real)
(declare-fun c () Real)
(declare-fun d () Real)
(assert (not (exists ((e Real)) (=> (and (= 0 (/ a (- b e)) c)) (< c d)))))
(check-sat)
